The correct answer is: A. Bodh Gaya
Bodh Gaya is a town in the Indian state of Bihar. It is located on the banks of the Phalgu River, about 96 kilometers (60 mi) south of Patna. The town is best known as the place where Gautama Buddha attained enlightenment under the Bodhi tree.
The Mahabodhi Temple, a UNESCO World Heritage Site, is located in Bodh Gaya. The temple was built in the 6th century AD by Emperor Ashoka. It is one of the most important Buddhist pilgrimage sites in the world.
The Bodhi tree, under which the Buddha attained enlightenment, is no longer alive. However, a descendant of the original tree is still growing in the temple complex.
The other options are incorrect because:
- Sarnath is a town in the Indian state of Uttar Pradesh. It is located about 10 kilometers (6 mi) from Varanasi. Sarnath is best known as the place where the Buddha gave his first sermon after attaining enlightenment.
- Sanchi is a town in the Indian state of Madhya Pradesh. It is located about 46 kilometers (29 mi) from Bhopal. Sanchi is best known for its Buddhist stupas, which are some of the oldest and most important Buddhist monuments in the world.
- Kusinagara is a town in the Indian state of Uttar Pradesh. It is located about 250 kilometers (160 mi) from Lucknow. Kusinagara is best known as the place where the Buddha died.